Spray fluid rotated lawn sprinkler



Nov. 15, 1949 c, PERRY 2,488,234:

SPRAY FLUID ROTATED LAWN SPRINKLER Filed May 5, 1947 :nwcutor Patented Nov. 15, 1949 SPRAY FLUID ROTATED LAWN SPRINKLER Charles H. Perry, Coral Gables, Fla.; Murrell E. Perry administrator of said Charles H. Perry,

deceased Application May 5, 1947, Serial No. 745,991

2 Claims.

This invention relates to sprinklers and particularly to the type of sprinklers set forth in my U. S. Patent No. 1,821,723, granted September 1, 1931. As shown in said patent, the sprinkler comprises generally an attaching base member provided with a nozzle, an open frame carried by said base member and having a pair of outwardly bowed arms connected at their upper ends by a sleeve or boss, a bearing-screw threaded through said boss in axial alignment with said nozzle, and a rotary spraying member mounted within said frame between the end of said nozzle and the inner end of the bearing screw, so that a jet of water issuing from the nozzle will impart rotation to said spraying member, the latter being formed with a wing having upwardly and outwardly radiating corrugations which spread the jet into small streams that separate into drops as they are projected over the area to be sprinkled.

In sprinklers of the type mentioned, wherein the rotary spraying member is arranged within an open frame, the side frame members obstruct and thereby interfere with an even distribution of the spray, so that V-shaped sectors radiating from said side members remain unwatered or only partly watered. Also, in localities where the rays of the sun are very hot, unevenness of expansion of the device permits the rotary distributor to become loose in its bearings after they have become only slightly worn, thereby making the sprinkler noisy in operation, or the rotary distributor may even become dislodged from its bearings.

An object of the present invention is to provide, in a sprinkler of the type referred to, means whereby the water will be distributed uniformly and completely over the area to be covered, without appreciable obstruction by the frame or any other part of the sprinkler.

A further object of the invention is to provide improved means for water lubricating the lower bearing of the rotary member, and for keeping said bearing clear of grit and dirt.

A further object of the invention is to provide an improved sprinkler structure whereby expansion of the frame due to the suns rays will not loosen or release the rotary distributing element.

Other objects of the invention will appear hereinafter.

The invention will be more readily understood by reference to the accompanying drawings forming a part of this specification in which:

Fig. 1 is a front elevation of a sprinkler embodying the invention,

Fig. 2 is a side elevation thereof,

Fig. 3 is a vertical section on the line 3-3 of Fig. 1,

Fig. 4 is a transverse section on the line 4-4 of Fig. 3, illustrated upon an enlarged scale, and looking in the direction of the arrows,

Fig. 5 is an enlarged detail elevation of a portion of one of the frame arms,

Fig. 6 is a detail view of the inner face of a portion thereof looking in the direction of the arrows 6 of Fig. 5,

Figs. 7 and 8 are sectional views taken on the lines 'l-'l and 8-8 respectively of Fig. 6.

Referring to the drawings, l0 indicates the base member of the sprinkler, which comprises a cap portion ll internally threaded as at [2 to receive the coupling member l3 of a hose M or other source of water supply, and having an upwardly extending tubular portion [5, preferably integral therewith. Extending laterally from the cap portion I I is an internally threaded lug l6 into which a supporting rod I! may be secured when the device is used as a lawn sprinkler.

Threaded upwardly through the tubular portion I5 is a nozzle member l8 having a kerfed head H! at its lower end, and a reduced upper end 20 extending above the portion [5 and terminating in a truncated conical bearing 2| for the rotary spraying member, as will appear hereinafter.

Extending upwardly from the base, and preferably integral therewith, is an open frame comprising a pair of arms 22-22 which are bowed outwardly and upwardly from diametrically opposite sides of the tubular portion l5, and then curved inwardly as at 23, and then downwardly as at 24 to a boss 25 formed integrally therewith. The boss 25 is provided with a screw threaded bore 26 into which is threaded a screw member 21. The member 21 is in axial alignment with nozzle member portion 20 and terminates at its lower end in a conical bearing 28.

Rotatably mounted in the frame between the lower and upper bearings 2| and 28 on the nozzle member 20 and screw 21 respectively, is a spraying member 29. The spraying member comprises an annular base 30 having an axial bore 3|, and an integral propeller wing 32, connected to the base by an intermediate stem portion 33 having a troughed passageway 34 curved spirally upwardly in the path of the jet issuing from the nozzle 20. The base is provided with a conical seat 35 to fit the bearing 2| on the nozzle; and a conical seat 36 to receive the conical bearing 28 on the screw 21. By means of the screw 21 a close adjustment 3 of the bearing may be made, after which the screw is secured by a lock nut 31.

The seat 35 is in the annular base 30 is provided with grooves 38 which furnish vents to prevent retarding the stream as it passes through the bore 3|; and, extending the full height of the bearings/theyzpermit sand, worn metalor other foreign matter to be flushed from the bearings with the water dribble.

The concave inner face of the wing 32 is formed with radiating corrugations 39, which divide the Water into a plurality of small streams which diffuse into drops as they 'are ejected over the area to be watered.

As hereinbefore stated, the side members of the frame of sprinklers of this type as heretofore constructed normally interfere with anevendistribufrom the path of rotation of the spraying element,

each of said arms having a portion in the path of the Water from said element provided with grooves inits opposite sidesextending substantially radially-of the axis of rotation of said element, the

'- tgro'oves'in each side of each arm extending at tion of the spray; and it is one of the main objects:

of this invention to overcome'this undesirable feature. To this-endthe-portions 23 of the frame members, 'whic'h are i-n the path of the water as it leaves the Wing 32, are provided in their lateral faces withgroovestfi, which radiate in substantially the lines of directionof the minute streams from the corrugations of the wing above mentioned. These grooves are V-shaped in cross section with the apices-or bottoms thereof extending*to the center of the arms 22 at their -=outer faces; and the g-rooves'on the opposite sides of the arm are staggered, as illustrated in Fig. 6, so asnot to materially weaken the arms, and to permit the Water to -reach the areas otherwise screened-bysaid arms. -As the grooves approach the inner-edge of the frame members, they are deepened, as indicatedat 4|, so "as to pass the imdialline of theinner edges of the frame members and to form the knife-edges -42, as illustrated in Fig. -6. 3y --this*construction, the streams of water 'from the wing will enter the groove '48 either directly, or'after having been parted by *the knife edges 42, and will :pass out of the grooves, as indicated by the broken lines in Figs. 7 'and -8,'-thereby making a perfect coverage of the area being wa/tered.

-i irt-vvill-be -noted-thatthe arms 22 are comparatiVeIythin throughout-thegreater portion of their length, but are thickened as they approach the base lfl and the boss-2 5,- as indicated-ates and M respectively. As the device becomes heated from the sun, the expansion "of the frame is substantially-compensated f or by the longitudinal expan- =sion of=the wing member, the nozzle member 20 and the screW-M so-that-the bearings will retain asnug fit' and thewing member Will-not become --ha-ving'a nozzle, -a-bearing opposite to the nozzle,

anda rotaryspraying element mounted rotatably between the nozzle and bearing for rotation by a stream of water from the nozzle and operative to-thro'w-the water-outwardly from its axisof rotation, saidspraying element -being provided with corrugations-extending outwardly from its axis of rotatioma frame composedof arms connecting the base and bearing --and positioned out.-

vvardly from the path 'of rotation of the spraying element, each'of said arms having a portion in the path of the water from=said element provided with grooves in its opposite sides extending substantially radially of theaxisofrotation of said element and insubstantial alignment with the corrugations thereoLthe-grooves in each .side of "each arm exen'dingat least to the center of the transverse thiokness'thereof and being staggered longitudinally of the arm relativelyto the grooves in the opposite side thereof.

CHARLES PERRY.

-1EFERENCES CITED The following references are of. record in the file of this patent:

UNITED STKTES PATENTS Number Name Date 961,006 Perry June 7 1910 1,147,513 Kirkpatrick July 10, 1915 1,763,980 June 17,1930 1,321,723 Sept. 1,1931 1,993,011 Lindberg Mar. 5, 1935 2,451,011 Cline Oct. 12, 1948 -FQREIGN Pn IEN'rs 1 l-umber 7 Country 7 Date 7 11,43}; Australia 'Ju1y'18, 1928 160,428 -Germany May 8, 1905 471,273 Great Britain Sept. 1, 1937 

